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AWR1642: Question about flash burner by UART

Allen35065
Expert 4005 points
Part Number: AWR1642
Other Parts Discussed in Thread: UNIFLASH

Hi expert,

Customer will use UART to burn and upgrade flash image. Because the signal on their UART cable is bad, sometimes they could not get ACK from 1642 when downloading image. They want to know if the bootloader did not get correct image part, bootloader will wait for correct part for ever?

Thanks.

Allen

  • 0
    TI__Guru 69960 points
    Hi Allen,
    Primary bootloader starts with break signal over UART where it waits for any UART command from Uniflash.
    As it starts with any MetaImage download, it expects each chunk in the sequence and sends the ACK for the same.
    If in between some chunk missed or any communication hindrance happens then best way to resolve it to restart the device and start the download sequence again. as in this scenario synchronization between device and PC is broken and Uniflash doesn't excatly which chunk ID it needs to send next which bootloader is expecting.

    Regards,
    Jitendra